Metrological certificate for gas detectors from MSR-Electronic


MSR-Electronic develops and produces reliable gas detectors for the ATEX area which have undergone metrological testing by DEKRA Testing and Certification GmbH.


ATEX certificate “EU Type Examination Certificate” confirmed according to EN 600079-29-1, EN 50104 and EN 50271


DEKRA logo

©DEKRA On the safe side, logo

MSR creates absolute safety for plants and people working in hazardous work areas of ATEX zone 1/2.

Taking into account the ATEX directive, gas detectors that comply with the EN 60079-29-1 standard protect against explosion hazards caused by combustible gases and vapours in these areas.

Hydrogen for example is a very reactive gas. For this reason, constant monitoring by a gas warning system is mandatory.



Leaks can occur at any time during research work, on test benches and during the production of the gas. This can cause catastrophic damage in the event of ignition.


Requirements for safety of plants and people


The requirements for gas sensors for the ATEX area for the measurement of combustible gases and vapours include general requirements such as construction and fault indications.

Skyline over blue industrial area


In addition, the following are also tested:

  • Calibration curve
  • drift and vibration behaviour
  • influence of humidity
  • flow rate
  • air pressure

The product requirements placed on ATEX gas sensors for measuring O2 are described in the EN 50104 Standard. This European Standard considers different types of application for gas detectors.

One possible application is, for example, the monitoring of oxygen concentration with regard to deviations from the normal atmospheric value in case of oxygen deficiency or excess.

Furthermore, applications are considered in which gas detectors are to monitor low oxygen limit values, e.g. during inerting.

EN 50271 specifies minimum requirements for electrical equipment which uses software and/or digital technology for the detection and measurement of combustible and toxic gases as well as oxygen.


Special gas detectors for the ATEX area from MSR-Electronic


Polyxeta housing and SX1 gas sensors

©MSR-Electronic GmbH, ATEX PolyXeta®2 with gas sensor SX1


MSR-Electronic offers gas sensors for the detection of:

  • methane (measuring range 0–100 % LEL, -25 °C to +60 °C)
  • hydrogen (measuring range 0–100 % LEL, -25 °C to +60 °C)
  • propane (measuring range 0–100 % LEL, -25 °C to +60 °C)
  • oxygen (measuring range 0–25 % VOL, -25 °C to +60 °C)


Numerous application areas benefit from this, such as the oil, gas and food industries or research with hydrogen.




Further information on MSR products can be found here in the current MSR-Electronic online catalog or in the webshop

MSR-Electronic is a manufacturer of fixed gas warning systems with decades of experience in the field of gas measurement technology.  The international company with headquarters in Germany has a wide range of methods for the detection of toxic, combustible gases and oxygen. On this basis MSR-Electronic develops individual gas sensors, controllers and warning devices for many applications, such as  parking garages, tunnelspetrochemical industry  or  shipping. The products meet more than the  general standards and regulations  and can therefore guarantee the safety of the plantIf you have any questions please send us an email or give us a call.